J. F. Campbell Collection > On the parallel roads of Lochaber

D. MILXE HOME OX THE PAKALLEL ROADS OF LOCHABEE. 641
formed .a sort of citl de sar, wliere the ice, arrested in its farther progress, and
melting, dropped the bouklers.
On Craig Dhu, the bouklers, in so far as not rounded, have their longer axis,
most frequently east and west in direction. The following notes from my Field
Book (p. 41) refer to these :— " A little above the 1301 level, found boulder l"^^
Ijang on bare rock here forming a flat surface, glaciated like the rest from
W. by N. (At this time I was inclined to glacier views.) The boulder, therefore,
must have come here after glaciation of rocks. Longer axis of boulder E. and W.
Standing at it, and looking towards tvest, I see that a line from that direction
clears all the hills, and that there is an opening for a current to have flowed from
west towarils and upon Craig Dhu. Found masses of white cpiartz rock glaciated
from west. A boulder hing on top of this rock, with longer axis W. by S. At a
level of 1751 feet, found boulder with longer axis W. by S. Xear Glen Glaster
Col, 1445 feet above sea, boulder with longer axis W. by S. Another, 8x4x4
feet with longer axis W. by S. Another of grey granite a little below summit
level (1075 feet) with longer axis W.N.W. (7x6x3 feet). It stands very
oddly, not resting on its wide surface of 6 feet, but on its narrow edge of 3 feet.
Another boulder 12x6x6 feet at 918 feet level, with longer axis X.W. by
W. Another 1'2 x 6 x 5 feet, with longer axis N.N.E."
The boulders just mentioned are situated along the flattish valley lying
l:)etween Craig Dhu and Craig Coinnichte on the south side, and Craig Willeim
on the noith side. This valley nnis in an east and west direction, so that it is
most probable that the boulders, almost all of which lie with their longer axis
in the same direction, have been put into that position by the agency of a
stream of some kind which flowed through the valley from the west.
It was through this valley that the Lake of Glen Eoy, when it stood at the \
middle shelf, discharged. But it is not probable that the stream from that lake | ^''^ ^^^ ''^A^
would have had power to bring these boulders, or put them into the jiositions
they occupy. The boulders, moreover, are above the level of the stream.
In Crlen Gluoy there are several boidfiers which deserve notice. Glen Gluoy
is the narrowest of all the valleys, with sides high and steep. There is a boulder
9x8x6 feet, on the hill which separates Glen Fintec from Glen Gluoy. It
is at a height of 812 feet above the sea. The hill here slopes towards W.S.W.
at an angle of about 45°. There is a thick covering of drift on the hill above,
and immediately Ijelow, there is a striated rock. This Ijoulder must have been
brought here from the west by some agent, such as floating ice, which stranded
on the hill.
At another spot there are several large boulders, also on a steep slope, at a
height of about 866 feet above the sea. They stand up somewhat conspicuously
above the drift in which they are partially imbedded.
How came these boulders into this position ?